> What is the printing technology? Typebar, daisy-wheel, dot-matrix? Judging by the ribbon cartridge type and the spec of 20-22 characters per second I expect

> What is the printing technology? Typebar, daisy-wheel, dot-matrix? Judging by the ribbon cartridge type and the spec of 20-22 characters per second I expect they're daisywheel printers. Also if you look closely at the clear cased versions you can see the head assembly which has a daisywheel loaded http://www.swintec.com/clear-typewriters/21-2410cc-michigan.html http://www.swintec.com/clear-typewriters/21-2410cc-michigan.... http://www.swintec.com/15-print-wheels http://www.swintec.com/15-print-wheels > What does the "display" provide, one line of type you can correct before printing? If you have a read of the spec here: http://www.swintec.com/48-2640-electronic-display-typewriter-.html http://www.swintec.com/48-2640-electronic-display-typewriter... 700-character Correction Memory ( within 10 lines) You can do some basic correction. I used to maintain/repair this kind of thing back in the late 80's early 90's when I worked as a field service engineer. Some more advanced units could store whole documents and do more clever things.